The price of refined oil in the Mainland fell continuously. The National Development and Reform Commission announced that the price of gasoline and diesel will be lowered by 245 and 235 yuan per ton respectively from the midnight on November 1 (***, the same below), which is equivalent to 0.19 yuan for gasoline prices and 0.2 yuan for diesel. The adjusted maximum supply prices of gasoline and diesel standard products were 8055 yuan and 6,980 yuan per ton respectively. According to historical data, compared with the latest price adjustment on October 18, the prices of gasoline and diesel were adjusted downward by 2.95% per ton respectively. And 3.25%.
Li Hong, head of the commodity branch of the commodity data business community energy branch, pointed out that after this reduction, the retail price per liter for gasoline No. 93 of the country, except for a few regions and most provinces and cities, has fully returned to the “6-year eraâ€. Analyst Pan Haiping, a product oil analyst at Business Club, believes that the US dollar index has risen strongly, and crude oil (80.45, -0.09, -0.11%) is under heavy pressure. But on the other hand, WTI, Dubai crude oil prices pressure on stocks. She predicts that in the next price adjustment window on November 28, the price of refined oil in the Mainland may usher in an upward adjustment.
Since the beginning of this year, the refined oil in the Mainland has gone through 4 ups, 11 downs and 6 strands. Overall, the price of gasoline in the Mainland this year fell by 1,170 yuan and 1,125 yuan respectively.
Chlorine dioxide when used as an effective disinfectant forms undesirable disinfection by-products, i.e. chlorite and chlorate ions. The aim of this research was to study the removal of these ions byferrous ions in the presence or absence of oxygen. The efficiency of Fe+2 for ClO2- and ClO3- removal was followed by a determination of their initial and final concentrations, pH and delta Fe+2 consumed/delta ClO2- removed ratios. The optimal weight ratio of delta Fe+2 consumed/delta ClO2- removed for complete ClO2 removal was found to be close to the theoretical calculated value of 3.31. It was proved that ferrous salts can reduce chlorite ions to harmless Cl- ions. This method can be recommended as a part of ClO2 disinfection to ensure safe drinking water, with no harm to waterconsumers and to the environment.
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